Jeep bulletin 18-062-26
What it saysFlash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs)… NHTSA’s full summary ↓
Jeep filed this with NHTSA as a service bulletin dated Jun 25, 2026, received Jul 2, 2026, about the engine. It names 1 model year (2019). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationFlash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● **P0420 - Catalyst System Efficiency Below Threshold Bank 1. ● P0430 - Catalyst System Efficiency Below Threshold Bank 2.** ● P0456 - EVAP System Small Leak. Customers may also comment on one or more of the following: ● **Vehicle fails emissions inspection testing.** ● Pinging/detonation sound from the engine after warm up at 1000-1500 RPM at low speed. (EMEA and APAC Only). ● The vehicle stalls at low speeds and/or coming to a stop This bulletin involves reprogramming the PCM with the latest available software.
Trouble codes it names: P0420 P0430
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 18-062-26 | Service bulletin | Jun 25, 2026 | 11034358 |
What the document itself lists
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 18-19-06-L1 | Module, Powertrain Control (PCM) - Reprogram | 0.3 hrs |
Read by machine from the document NHTSA serves (3 pages), read Sep 29, 2026. A part number is shown only where it matches Jeep’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote. Listings and prices on eBay Motors are the seller’s.
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The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 1 model year this bulletin names have filed 742 complaints with NHTSA since 2015. 128 of them name Power Train, Engine — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
On the 2019 Jeep Wrangler, the 20 owners who gave an odometer reading for Power Train reported it at a median of 38,500 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
While driving to work had problems with engine revving trying to shift there was a loud bang, pulled off the road, started seeing smoke come from the vehicle then was engulfed in flames and burned completely up. There is a complaint with fca case number 58132542 the vehicle was traveling at 40 MPH on 295 parkway when the problem started.
2019 Jeep Wrangler · Power Train · filed with NHTSA Mar 11, 2019
#1, steering control is terrible with this Jeep. Have to correct the steering continuously just to keep it in the proper lane. Other new Jeep owners that I have listened to complain about this problem to their dealerships.
2019 Jeep Wrangler · Power Train · filed with NHTSA Mar 22, 2019
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the engine
Source: same model, same component group69 other manufacturer communications filed against the Jeep Wrangler under the same component group (engine), newest first. The eight newest are listed; the rest are on the Jeep list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| S2609000011 | Service bulletin | Sep 11, 2026 | MIL-On and/or Engine Oil Leak |
| 9100363 Rev 3 | Service bulletin | Aug 26, 2026 | Turbocharger Kit Please note many parts of the Turbo Assembly can be serviced separately and complete turbo replacement may not be necessary… |
| 113835 | Service bulletin | Aug 5, 2026 | COVER - CYLINDER HEAD |
| 113271 | Service bulletin | Jul 7, 2026 | CORE – HEATER |
| 113270 | Service bulletin | Jul 7, 2026 | CORE – HEATER |
| 112640 | Service bulletin | Jun 30, 2026 | THROTTLE BODY – NONE |
| 112639 | Service bulletin | Jun 30, 2026 | THROTTLE BODY – NONE |
| 112842 | Service bulletin | Jun 18, 2026 | BOLT - HEX FLANGE HEAD |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Jeep, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Jeep 18-062-26 a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the 18-062-26 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way.
Which vehicles does 18-062-26 cover?
The manufacturer filed it against 1 model year: 2019 Jeep Wrangler. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.